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Browsing Geology by Title

Now showing items 5-11 of 11

High arsenic (As) concentrations in the shallow groundwaters of southern Louisiana: Evidence of microbial controls on As mobilization from sediments

Yang, N.; Shen, Z.; Datta, Saugata; Johannesson, K. H.

Study region: The Mississippi Delta in southern Louisiana, United States. Study focus: The probable role that microbial respiration plays in As release from the shallow aquifer sediments. New hydrological insights for the ...
Hydrological control of As concentrations in Bangladesh groundwater

Stute, M.; Zheng, Y.; Schlosser, P.; Horneman, A.; Dhar, R. K.; Datta, Saugata; Hoque, M. A.; Seddique, A. A.; Shamsudduha, M.; Ahmed, K. M.; Van Geen, A. (2012-06-01)

The elevated arsenic (As) content of groundwater from wells across Bangladesh and several other South Asian countries is estimated to slowly poison at least 100 million people. The heterogeneous distribution of dissolved ...
Impact of commercial natural gas production on geochemistry and microbiology in a shale-gas reservoir

Kirk, Matthew F.; Martini, Anna M.; Breecker, Daniel O.; Colman, Daniel R.; Takacs-Vesbach, Cristina; Petsch, Steven T. (2013-04-18)

We consider the effect that commercial gas production has had on microbiology and water and gas geochemistry in the northern producing trend of the Antrim Shale, an unconventional gas reservoir in the Michigan Basin, USA. ...
Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivity

Schildgen, T. F.; Robinson, R. A. J.; Savi, S.; Phillips, W. M.; Spencer, Joel Q. G.; Bookhagen, B.; Scherler, D.; Tofelde, S.; Alonso, R. N.; Kubik, P. W.; Binnie, S. A.; Strecker, M. R.

Fluvial fill terraces preserve sedimentary archives of landscape responses to climate change, typically over millennial timescales. In the Humahuaca Basin of NW Argentina (Eastern Cordillera, southern Central Andes), our ...
Perennial ponds are not an important source of water or dissolved organic matter to groundwaters with high arsenic concentrations in West Bengal, India

Datta, Saugata; Neal, Andrew W.; Mohajerin, T. Jade; Ocheltree, Troy; Rosenheim, Brad E.; White, Christopher D.; Johannesson, Karen H. (2012-09-24)
Precambrian nomenclature in Kansas

Sawin, Robert S.; Franseen, Evan K.; Ludvigson, Greg A.; Watney, W. Lynn; West, Ronald R. (2014-05-27)

The informal stratigraphic term “Precambrian” is replaced by formal nomenclature—Proterozoic and Archean Eonothems/Eons—and the informal term Hadean. The Phanerozoic Eonothem/Eon, representing all rocks younger than the ...
Solute Concentrations Influence Microbial Methanogenesis in Coal-bearing Strata of the Cherokee Basin, USA

Kirk, Matthew F.; Wilson, Brien H.; Marquart, Kyle A.; Zeglin, Lydia H.; Vinson, David S.; Flynn, Theodore M.